My husband was injected w/ a 3 month shot. It has been 41/2 months and the side effects still cont?

How long for the hormone to ware off and he will return to normal. he is still averaging 20+ hot flashes a day, no libido, lethargy,etc. I'm starting to think he was injected w/ a 6 month supply. Help. He had his prostate removed April 12, so there is no need for the hormone. Why is it still working?

As far as a Eligard needle is concerned the affects can last for a long time and sometimes some of the affects just dont go away. They do lessen a bit over the period. I want to know why he went on the needle in the first place after a complete removal?